Tuesday, July23, 2019 L-36.com


Marine Weather and Tides
Seabrook, TX

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Sunrise 6:33AMSunset 8:19PM Tuesday July 23, 2019 8:08 AM CDT (13:08 UTC) Moonrise 11:34PMMoonset 11:24AM Illumination 61% Phase: Waning Gibbous; Moon at 21 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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GMZ335 Expires:201907232230;;501648 Fzus54 Khgx 230933 Cwfhgx Coastal Waters Forecast National Weather Service Houston/galveston Tx 433 Am Cdt Tue Jul 23 2019 Upper Texas Coastal Waters From High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest 10 Percent Of The Waves. Gmz330-335-232230- Matagorda Bay-galveston Bay- 433 Am Cdt Tue Jul 23 2019
Today..Northwest winds 10 to 15 knots becoming north in the afternoon. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Tonight..Northeast winds near 15 knots. Bay waters slightly choppy to choppy.
Wednesday..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday night..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Thursday..Northeast winds 10 to 15 knots becoming east in the afternoon. Bay waters slightly choppy.
Thursday night..Southeast winds 10 to 15 knots becoming east 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A slight chance of showers after midnight.
Friday..East winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A slight chance of showers and Thunderstorms.
Friday night..Southeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Bay waters slightly choppy becoming smooth after midnight. A chance of showers and a slight chance of Thunderstorms.
Saturday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A chance of showers and Thunderstorms.
Saturday night..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A slight chance of Thunderstorms after midnight.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 433 Am Cdt Tue Jul 23 2019
Synopsis for high island to matagorda ship channel out 60 nm.. A cool front will push off the coast this morning bringing showers and Thunderstorms to the area. Northeast winds will increase this evening and a small craft advisory may be required overnight in the gulf waters. Winds will slowly veer to the east and eventually southeast Thursday night and Friday as high pressure moves away from the region. Onshore flow will persist through the weekend.


7 Day Forecast for Marine Location Near Seabrook, TX
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location: 29.61, -94.98     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 230833
afdhgx
area forecast discussion
national weather service houston galveston tx
333 am cdt Tue jul 23 2019

Discussion
It's here, it's here, the much advertised summer cold front is
arriving! Now, prepare for christmas in july! And if you believe
that, I also have a workshop at the north pole up for sale. No,
while the results of this infrequent summer front will not be
incredibly dramatic, it will - at least, for a couple days - usher
in much drier air.

Though this won't help cool things off terribly much as far as
daytime highs, we'll finally be able to cool more effectively
overnight. Indeed, while ultimately most record lows will be safe,
the houston climate sites may get quite close for a night or two.

Beyond that, look for onshore flow to return late in the week, and
a more typical summertime pattern to resume for this weekend and
into early next week.

Short term [today through Wednesday]
Sct shra and iso tsra are developing along remnant outflows from
yday and a cool front that is sagging into the area. Deep, rich
moisture is pooling south of these features W pw's between 2-2.3"
so cannot rule out a few very localized heavy downpours. We should
see winds shift to a NW N direction at the coast toward mid morning
and a drier airmass will be filtering into the area throughout the
day. However, this will be slower to occur closer to the coast (say
areas generally south of i-10) where they'll likely see dewpoints
remaining in the 70s for much of the day and probably won't see
noticeably the drier air arriving until the late aftn and evng
hours. So, after the early morning precip, cannot rule out some
additional sct activity developing later in the morning and
afternoon once convective temps in the upper 80s are reached.

Wed could be one of the nicest july days this region has seen in
many, many, many years. Msunny skies, highs in the 88-91 degree
range, dewpoints in the 50s, rh's 20-35%, and a comfortable 10-15mph
ne wind.

Long term [Wednesday night through Tuesday]
As winds stay generally northeasterly into Wednesday night,
without enough easterly component to really have any onshore flow
yet, look for another dry and cool night across southeast texas.

Wednesday night should be the coolest night of the week, as winds
will veer a little more easterly on Thursday. While this isn't
going to pump in boundary layer moisture just yet, it will at
least start an upward trend in dewpoint, and result in a slow
warming trend in overnight lows.

This warming trend will accelerate into the weekend as winds
continue to veer more southeasterly. Moisture return will be
boosted, particularly by Friday night as winds become more
directly onshore. This will signal a return to a more typical
summertime pattern, with the usual diurnal cloud, shower, and
thunderstorm trends.

Don't expect much change as we head into next week, either. At the
midlevels, we remain in near a col region between two upper
ridges. And though the western us ridge will work harder to build
over the region next week, we'll remain pretty solidly entrenched
in onshore flow near the surface into early next week.

There may be some indication of ridging taking a stronger hold and
diminishing diurnal precip chances and a slow rise in temperatures,
but that's beyond the scope of this forecast period, and it's
probably not worth much speculation just yet.

Aviation [09z TAF update]
Sct shra tstms will be the primary issue early this morning across
the area. Could see additional activity develop later this morning &
early afternoon along south of i-10 once temps climb into the upper
80s to around 90. Fcst soundings are showing a possibility of 1500-
2500ft CIGS from cxo southward into the mid morning hours (variable
& lower in any stronger tstms that develop). Otherwise,VFR
conditions should prevail thru the remainder of the period.

Marine
Cool front will be moving off the coast this morning and will become
a focus for some shra tstms during the day. NE winds increase later
this evening and overnight. Caution flags will be required in the
gulf waters (a brief advisory is not out of the question). NE E flow
will persist thru thurs. As high pressure moves off to the east,
look for onshore winds to resume thurs night and Friday and continue
thru the weekend.

Tropical
Just a quick note for awareness. There is a tropical depression 3.

It is located in the atlantic, and expected to travel just off the
florida and georgia atlantic coasts. This should be a short-lived
tropical cyclone with little or no strengthening in its future.

That's probably about all we need to know here in texas. For those
who wish to follow along despite no expected impacts for our area,
nhc will have all the details.

Climate
Another warm morning, another record warm minimum temperature at
hobby airport. Yesterday, the temperature fell only to 80 degrees,
which ties the record last reached all the way back in... 2017.

While the current night is rather warm again, this morning's
passing cold front will likely bring an end to our stretch of
sporadic record-setting warm minimum temperatures across the area.

Preliminary point temps pops
College station (cll) 90 68 91 65 93 0 0 0 0 0
houston (iah) 91 70 91 67 92 30 0 0 0 0
galveston (gls) 88 76 88 75 88 50 20 0 0 0

Hgx watches warnings advisories
Tx... None.

Gm... None.

Short term... 47
long term... Luchs
aviation... 47
marine... 47
tropical... Luchs
climate... Luchs


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 5 mi56 min N 12 G 15 80°F 86°F1015 hPa
EPTT2 - 8771013 - Eagle Point, TX 10 mi56 min NW 4.1 G 8 81°F 86°F1014.5 hPa
NCHT2 - 8770777 - Manchester, TX 17 mi56 min NNW 4.1 G 6 80°F 87°F1014.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 22 mi56 min WNW 9.9 G 15 83°F 86°F1014.1 hPa
GRRT2 22 mi56 min NW 5.1 G 8.9 81°F 84°F1014.6 hPa
GTOT2 23 mi56 min W 6 G 8.9 82°F 86°F1015 hPa
RLOT2 - 8770971 - Rollover Pass, TX 26 mi50 min N 8 G 8.9 81°F 85°F1015.2 hPa
HIST2 31 mi56 min SE 5.1 G 15 76°F 86°F1014.9 hPa
KXIH 38 mi33 min SW 18 75°F 73°F
LUIT2 38 mi50 min WNW 11 G 14 80°F 85°F1015.1 hPa
42035 - GALVESTON 22NM East of Galveston, TX 40 mi38 min SW 14 G 19 81°F 1015.6 hPa78°F
FCGT2 - 8772447 - USCG Freeport, TX 49 mi56 min WNW 8 G 12 81°F 86°F1015.7 hPa
FPST2 49 mi56 min WNW 13 G 18 81°F 85°F1014.9 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi78 minNW 1010.00 miMostly Cloudy81°F75°F84%1014.6 hPa
Houston, Pearland Regional Airport, TX15 mi75 minNW 610.00 miFair80°F75°F85%1015.2 hPa
Houston, Houston Hobby Airport, TX16 mi75 minN 1110.00 miMostly Cloudy79°F73°F82%1015.2 hPa
John Dunn Helistop, TX23 mi73 minNNW 810.00 miFair79°F71°F79%1015.2 hPa
Galveston, Scholes Field, TX24 mi76 minW 710.00 miMostly Cloudy82°F78°F88%1015 hPa

Wind History from EFD (wind in knots)
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Last 24hrCalmSW4SW5SW8S7SE7SE7SE7SE7--SW3S6S4S4S7S4SW3W3W4W6W6W7NW10NW9
1 day agoCalm--CalmCalmS7E10SE9SE9S8SE10SE8S6S7SE5S5S3S3------CalmCalmCalmCalm
2 days agoE3S7S8S7S7SE10S12
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S13SE11S12S10S6S6S4S4S5S5S3S2S1CalmCalmCalm

Tide / Current Tables for Barbours Cut, Morgans Point, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
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Tue -- 12:02 AM CDT     Moonrise
Tue -- 03:41 AM CDT     -0.41 knots Max Ebb
Tue -- 06:21 AM CDT     0.00 knots Slack
Tue -- 06:34 AM CDT     Sunrise
Tue -- 09:52 AM CDT     0.80 knots Max Flood
Tue -- 12:22 PM CDT     Moonset
Tue -- 01:26 PM CDT     -0.00 knots Slack
Tue -- 05:30 PM CDT     -1.20 knots Max Ebb
Tue -- 08:16 PM CDT     Sunset
Tue -- 09:47 PM CDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.2-0.3-0.4-0.4-0.3-0.10.20.50.70.80.70.50.2-0.2-0.6-1-1.2-1.2-1-0.7-0.30.10.3

Weather Map and Satellite Images
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wmap_A
GOES Local Image of SouthCentralPlains    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Houston/Galveston, TX (9,2,3,4)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current


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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.